- 17 Apr, 2017 1 commit
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Matthias Kaehlcke authored
clang currently does not support these optimizations, only enable them when they are available. Signed-off-by:
Matthias Kaehlcke <mka@chromium.org> Cc: Greg Hackmann <ghackmann@google.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Michael Davidson <md@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: grundler@chromium.org Link: http://lkml.kernel.org/r/20170413172609.118122-1-mka@chromium.orgSigned-off-by:
Ingo Molnar <mingo@kernel.org>
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- 16 Apr, 2017 8 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds authored
Pull ARM SoC fixes from Olof Johansson: "Again, a batch that's been sitting a couple of weeks, mostly because I anticipated a bit more material but it didn't show up -- which is good. These are all your garden variety fixes for ARM platforms. The most visible issue fixed here is probably the SMP reset issue on OMAP, the rest are minor stuff" * tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: arm64: allwinner: a64: add pmu0 regs for USB PHY ARM: OMAP2+: omap_device: Sync omap_device and pm_runtime after probe defer reset: add exported __reset_control_get, return NULL if optional ARM: orion5x: only call into phylib when available ARM: omap2+: Revert omap-smp.c changes resetting CPU1 during boot ARM: dts: am335x-evmsk: adjust mmc2 param to allow suspend ARM: dts: ti: fix PCI bus dtc warnings ARM: dts: am335x-baltos: disable EEE for Atheros 8035 PHY ARM: dts: OMAP3: Fix MFG ID EEPROM ARM: sun8i: a33: add operating-points-v2 property to all nodes ARM: sun8i: a33: remove highest OPP to fix CPU crashes
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git://git.kernel.dk/linux-blockLinus Torvalds authored
Pull block fixes from Jens Axboe: "Four small fixes. Three of them fix the same error in NVMe, in loop, fc, and rdma respectively. The last fix from Ming fixes a regression in this series, where our bvec gap logic was wrong and causes an oops on NVMe for certain conditions" * 'for-linus' of git://git.kernel.dk/linux-block: block: fix bio_will_gap() for first bvec with offset nvme-fc: Fix sqsize wrong assignment based on ctrl MQES capability nvme-rdma: Fix sqsize wrong assignment based on ctrl MQES capability nvme-loop: Fix sqsize wrong assignment based on ctrl MQES capability
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Olof Johansson authored
Merge tag 'omap-for-v4.11/fixes-rc6-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes Regression fix for omap interconnect code for deferred probe. Without this fix we can get PM related warnings for devices that use deferred probe. If necessary, this fix can wait for the v4.12 merge window no problem. * tag 'omap-for-v4.11/fixes-rc6-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: ARM: OMAP2+: omap_device: Sync omap_device and pm_runtime after probe defer ARM: omap2+: Revert omap-smp.c changes resetting CPU1 during boot ARM: dts: am335x-evmsk: adjust mmc2 param to allow suspend ARM: dts: ti: fix PCI bus dtc warnings ARM: dts: am335x-baltos: disable EEE for Atheros 8035 PHY ARM: dts: OMAP3: Fix MFG ID EEPROM Signed-off-by:
Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroupLinus Torvalds authored
Pull cgroup fix from Tejun Heo: "Unfortunately, the commit to fix the cgroup mount race in the previous pull request can lead to hangs. The original bug has been around for a while and isn't too likely to be triggered in usual use cases. Revert the commit for now" * 'for-4.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: Revert "cgroup: avoid attaching a cgroup root to two different superblocks"
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/ttyLinus Torvalds authored
Pull tty fix from Greg KH: "Here is a single tty core revert for a patch that was reported to cause problems. The original issue is one that we have lived with for decades, so trying to scramble to fix the fix in time for 4.11-final does not make sense due to the fragility of the tty ldisc layer. Just reverting it makes sense for now" * tag 'tty-4.11-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: Revert "tty: don't panic on OOM in tty_set_ldisc()"
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-traceLinus Torvalds authored
Pull ftrace fix from Steven Rostedt: "While rewriting the function probe code, I stumbled over a long standing bug. This bug has been there sinc function tracing was added way back when. But my new development depends on this bug being fixed, and it should be fixed regardless as it causes ftrace to disable itself when triggered, and a reboot is required to enable it again. The bug is that the function probe does not disable itself properly if there's another probe of its type still enabled. For example: # cd /sys/kernel/debug/tracing # echo schedule:traceoff > set_ftrace_filter # echo do_IRQ:traceoff > set_ftrace_filter # echo \!do_IRQ:traceoff > /debug/tracing/set_ftrace_filter # echo do_IRQ:traceoff > set_ftrace_filter The above registers two traceoff probes (one for schedule and one for do_IRQ, and then removes do_IRQ. But since there still exists one for schedule, it is not done properly. When adding do_IRQ back, the breakage in the accounting is noticed by the ftrace self tests, and it causes a warning and disables ftrace" * tag 'trace-v4.11-rc5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: ftrace: Fix removing of second function probe
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Tejun Heo authored
This reverts commit bfb0b80d. Andrei reports CRIU test hangs with the patch applied. The bug fixed by the patch isn't too likely to trigger in actual uses. Revert the patch for now. Signed-off-by:
Tejun Heo <tj@kernel.org> Reported-by:
Andrei Vagin <avagin@virtuozzo.com> Link: http://lkml.kernel.org/r/20170414232737.GC20350@outlook.office365.com
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- 15 Apr, 2017 9 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimmLinus Torvalds authored
Pull nvdimm fixes from Dan Williams: "A small crop of lockdep, sleeping while atomic, and other fixes / band-aids in advance of the full-blown reworks targeting the next merge window. The largest change here is "libnvdimm: fix blk free space accounting" which deletes a pile of buggy code that better testing would have caught before merging. The next change that is borderline too big for a late rc is switching the device-dax locking from rcu to srcu, I couldn't think of a smaller way to make that fix. The __copy_user_nocache fix will have a full replacement in 4.12 to move those pmem special case considerations into the pmem driver. The "libnvdimm: band aid btt vs clear poison locking" commit admits that our error clearing support for btt went in broken, so we just disable it in 4.11 and -stable. A replacement / full fix is in the pipeline for 4.12 Some of these would have been caught earlier had DEBUG_ATOMIC_SLEEP been enabled on my development station. I wonder if we should have: config DEBUG_ATOMIC_SLEEP default PROVE_LOCKING ...since I mistakenly thought I got both with PROVE_LOCKING=y. These have received a build success notification from the 0day robot, and some have appeared in a -next release with no reported issues" * 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: x86, pmem: fix broken __copy_user_nocache cache-bypass assumptions device-dax: switch to srcu, fix rcu_read_lock() vs pte allocation libnvdimm: band aid btt vs clear poison locking libnvdimm: fix reconfig_mutex, mmap_sem, and jbd2_handle lockdep splat libnvdimm: fix blk free space accounting acpi, nfit, libnvdimm: fix interleave set cookie calculation (64-bit comparison)
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds authored
Pull SCSI fixes from James Bottomley: "This is seven small fixes which are all for user visible issues that fortunately only occur in rare circumstances. The most serious is the sr one in which QEMU can cause us to read beyond the end of a buffer (I don't think it's exploitable, but just in case). The next is the sd capacity fix which means all non 512 byte sector drives greater than 2TB fail to be correctly sized. The rest are either in new drivers (qedf) or on error legs" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: ipr: do not set DID_PASSTHROUGH on CHECK CONDITION scsi: aacraid: fix PCI error recovery path scsi: sd: Fix capacity calculation with 32-bit sector_t scsi: qla2xxx: Add fix to read correct register value for ISP82xx. scsi: qedf: Fix crash due to unsolicited FIP VLAN response. scsi: sr: Sanity check returned mode data scsi: sd: Consider max_xfer_blocks if opt_xfer_blocks is unusable
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linuxLinus Torvalds authored
Pull parisc fix from Helge Deller: "Mikulas Patocka fixed a few bugs in our new pa_memcpy() assembler function, e.g. one bug made the kernel unbootable if source and destination address are the same" * 'parisc-4.11-4' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: fix bugs in pa_memcpy
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Martin Brandenburg authored
Otherwise lockdep says: [ 1337.483798] ================================================ [ 1337.483999] [ BUG: lock held when returning to user space! ] [ 1337.484252] 4.11.0-rc6 #19 Not tainted [ 1337.484423] ------------------------------------------------ [ 1337.484626] mount/14766 is leaving the kernel with locks still held! [ 1337.484841] 1 lock held by mount/14766: [ 1337.485017] #0: (&type->s_umount_key#33/1){+.+.+.}, at: [<ffffffff8124171f>] sget_userns+0x2af/0x520 Caught by xfstests generic/413 which tried to mount with the unsupported mount option dax. Then xfstests generic/422 ran sync which deadlocks. Signed-off-by:
Martin Brandenburg <martin@omnibond.com> Acked-by:
Mike Marshall <hubcap@omnibond.com> Cc: stable@vger.kernel.org Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Linus Torvalds authored
Normal pathname lookup doesn't allow empty pathnames, but using AT_EMPTY_PATH (with name_to_handle_at() or fstatat(), for example) you can trigger an empty pathname lookup. And not only is the RCU lookup in that case entirely unnecessary (because we'll obviously immediately finalize the end result), it is actively wrong. Why? An empth path is a special case that will return the original 'dirfd' dentry - and that dentry may not actually be RCU-free'd, resulting in a potential use-after-free if we were to initialize the path lazily under the RCU read lock and depend on complete_walk() finalizing the dentry. Found by syzkaller and KASAN. Reported-by:
Dmitry Vyukov <dvyukov@google.com> Reported-by:
Vegard Nossum <vegard.nossum@gmail.com> Acked-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Mikulas Patocka authored
The patch 554bfece ("parisc: Fix access fault handling in pa_memcpy()") reimplements the pa_memcpy function. Unfortunatelly, it makes the kernel unbootable. The crash happens in the function ide_complete_cmd where memcpy is called with the same source and destination address. This patch fixes a few bugs in pa_memcpy: * When jumping to .Lcopy_loop_16 for the first time, don't skip the instruction "ldi 31,t0" (this bug made the kernel unbootable) * Use the COND macro when comparing length, so that the comparison is 64-bit (a theoretical issue, in case the length is greater than 0xffffffff) * Don't use the COND macro after the "extru" instruction (the PA-RISC specification says that the upper 32-bits of extru result are undefined, although they are set to zero in practice) * Fix exception addresses in .Lcopy16_fault and .Lcopy8_fault * Rename .Lcopy_loop_4 to .Lcopy_loop_8 (so that it is consistent with .Lcopy8_fault) Cc: <stable@vger.kernel.org> # v4.9+ Fixes: 554bfece ("parisc: Fix access fault handling in pa_memcpy()") Signed-off-by:
Mikulas Patocka <mpatocka@redhat.com> Signed-off-by:
Helge Deller <deller@gmx.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/inputLinus Torvalds authored
Pull input fixes from Dmitry Torokhov: "Just a small update to xpad driver to recognize yet another gamepad, and another change making sure userio.h is exported" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: xpad - add support for Razer Wildcat gamepad uapi: add missing install of userio.h
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds authored
Pull networking fixes from David Miller: "Things seem to be settling down as far as networking is concerned, let's hope this trend continues... 1) Add iov_iter_revert() and use it to fix the behavior of skb_copy_datagram_msg() et al., from Al Viro. 2) Fix the protocol used in the synthetic SKB we cons up for the purposes of doing a simulated route lookup for RTM_GETROUTE requests. From Florian Larysch. 3) Don't add noop_qdisc to the per-device qdisc hashes, from Cong Wang. 4) Don't call netdev_change_features with the team lock held, from Xin Long. 5) Revert TCP F-RTO extension to catch more spurious timeouts because it interacts very badly with some middle-boxes. From Yuchung Cheng. 6) Fix the loss of error values in l2tp {s,g}etsockopt calls, from Guillaume Nault. 7) ctnetlink uses bit positions where it should be using bit masks, fix from Liping Zhang. 8) Missing RCU locking in netfilter helper code, from Gao Feng. 9) Avoid double frees and use-after-frees in tcp_disconnect(), from Eric Dumazet. 10) Don't do a changelink before we register the netdevice in bridging, from Ido Schimmel. 11) Lock the ipv6 device address list properly, from Rabin Vincent" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (29 commits) netfilter: ipt_CLUSTERIP: Fix wrong conntrack netns refcnt usage netfilter: nft_hash: do not dump the auto generated seed drivers: net: usb: qmi_wwan: add QMI_QUIRK_SET_DTR for Telit PID 0x1201 ipv6: Fix idev->addr_list corruption net: xdp: don't export dev_change_xdp_fd() bridge: netlink: register netdevice before executing changelink bridge: implement missing ndo_uninit() bpf: reference may_access_skb() from __bpf_prog_run() tcp: clear saved_syn in tcp_disconnect() netfilter: nf_ct_expect: use proper RCU list traversal/update APIs netfilter: ctnetlink: skip dumping expect when nfct_help(ct) is NULL netfilter: make it safer during the inet6_dev->addr_list traversal netfilter: ctnetlink: make it safer when checking the ct helper name netfilter: helper: Add the rcu lock when call __nf_conntrack_helper_find netfilter: ctnetlink: using bit to represent the ct event netfilter: xt_TCPMSS: add more sanity tests on tcph->doff net: tcp: Increase TCP_MIB_OUTRSTS even though fail to alloc skb l2tp: don't mask errors in pppol2tp_getsockopt() l2tp: don't mask errors in pppol2tp_setsockopt() tcp: restrict F-RTO to work-around broken middle-boxes ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Thomas Gleixner: "A set of small fixes for x86: - fix locking in RDT to prevent memory leaks and freeing in use memory - prevent setting invalid values for vdso32_enabled which cause inconsistencies for user space resulting in application crashes. - plug a race in the vdso32 code between fork and sysctl which causes inconsistencies for user space resulting in application crashes. - make MPX signal delivery work in compat mode - make the dmesg output of traps and faults readable again" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/intel_rdt: Fix locking in rdtgroup_schemata_write() x86/debug: Fix the printk() debug output of signal_fault(), do_trap() and do_general_protection() x86/vdso: Plug race between mapping and ELF header setup x86/vdso: Ensure vdso32_enabled gets set to valid values only x86/signals: Fix lower/upper bound reporting in compat siginfo
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- 14 Apr, 2017 22 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Thomas Gleixner: "Two small fixes for perf: - the move to support cross arch annotation introduced per arch initialization requirements, fullfill them for s/390 (Christian Borntraeger) - add the missing initialization to the LBR entries to avoid exposing random or stale data" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86: Avoid exposing wrong/stale data in intel_pmu_lbr_read_32() perf annotate s390: Fix perf annotate error -95 (4.10 regression)
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull irq fixes from Thomas Gleixner: "The irq department provides: - two fixes for the CPU affinity spread infrastructure to prevent unbalanced spreading in corner cases which leads to horrible performance, because interrupts are rather aggregated than spread - add a missing spinlock initializer in the imx-gpcv2 init code" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip/irq-imx-gpcv2: Fix spinlock initialization irq/affinity: Fix extra vecs calculation irq/affinity: Fix CPU spread for unbalanced nodes
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull EFI fixes from Thomas Gleixner: "Three fixes from EFI land: - prevent accessing a Graphic Output Device (GOP) which the kernel does not know to handle - prevent PCI reconfiguration to modify a BAR which covers the framebuffer because that's already in use through the EFI GOP interface - avoid reserving EFI runtime regions as this results in bogus memory mappings" * 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/efi: Don't try to reserve runtime regions efi/fb: Avoid reconfiguration of BAR that covers the framebuffer efi/libstub: Skip GOP with PIXEL_BLT_ONLY format
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git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfsLinus Torvalds authored
Pull btrfs fixes from Chris Mason: "Dave Sterba collected a few more fixes for the last rc. These aren't marked for stable, but I'm putting them in with a batch were testing/sending by hand for this release" * 'for-linus-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: Btrfs: fix potential use-after-free for cloned bio Btrfs: fix segmentation fault when doing dio read Btrfs: fix invalid dereference in btrfs_retry_endio btrfs: drop the nossd flag when remounting with -o ssd
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git://git.samba.org/sfrench/cifs-2.6Linus Torvalds authored
Pull more CIFS fixes from Steve French: "As promised, here is the remaining set of cifs/smb3 fixes for stable (and a fix for one regression) now that they have had additional review and testing" * 'for-next' of git://git.samba.org/sfrench/cifs-2.6: CIFS: Fix SMB3 mount without specifying a security mechanism CIFS: store results of cifs_reopen_file to avoid infinite wait CIFS: remove bad_network_name flag CIFS: reconnect thread reschedule itself CIFS: handle guest access errors to Windows shares CIFS: Fix null pointer deref during read resp processing
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Steven Rostedt (VMware) authored
When two function probes are added to set_ftrace_filter, and then one of them is removed, the update to the function locations is not performed, and the record keeping of the function states are corrupted, and causes an ftrace_bug() to occur. This is easily reproducable by adding two probes, removing one, and then adding it back again. # cd /sys/kernel/debug/tracing # echo schedule:traceoff > set_ftrace_filter # echo do_IRQ:traceoff > set_ftrace_filter # echo \!do_IRQ:traceoff > /debug/tracing/set_ftrace_filter # echo do_IRQ:traceoff > set_ftrace_filter Causes: ------------[ cut here ]------------ WARNING: CPU: 2 PID: 1098 at kernel/trace/ftrace.c:2369 ftrace_get_addr_curr+0x143/0x220 Modules linked in: [...] CPU: 2 PID: 1098 Comm: bash Not tainted 4.10.0-test+ #405 Hardware name: Hewlett-Packard HP Compaq Pro 6300 SFF/339A, BIOS K01 v02.05 05/07/2012 Call Trace: dump_stack+0x68/0x9f __warn+0x111/0x130 ? trace_irq_work_interrupt+0xa0/0xa0 warn_slowpath_null+0x1d/0x20 ftrace_get_addr_curr+0x143/0x220 ? __fentry__+0x10/0x10 ftrace_replace_code+0xe3/0x4f0 ? ftrace_int3_handler+0x90/0x90 ? printk+0x99/0xb5 ? 0xffffffff81000000 ftrace_modify_all_code+0x97/0x110 arch_ftrace_update_code+0x10/0x20 ftrace_run_update_code+0x1c/0x60 ftrace_run_modify_code.isra.48.constprop.62+0x8e/0xd0 register_ftrace_function_probe+0x4b6/0x590 ? ftrace_startup+0x310/0x310 ? debug_lockdep_rcu_enabled.part.4+0x1a/0x30 ? update_stack_state+0x88/0x110 ? ftrace_regex_write.isra.43.part.44+0x1d3/0x320 ? preempt_count_sub+0x18/0xd0 ? mutex_lock_nested+0x104/0x800 ? ftrace_regex_write.isra.43.part.44+0x1d3/0x320 ? __unwind_start+0x1c0/0x1c0 ? _mutex_lock_nest_lock+0x800/0x800 ftrace_trace_probe_callback.isra.3+0xc0/0x130 ? func_set_flag+0xe0/0xe0 ? __lock_acquire+0x642/0x1790 ? __might_fault+0x1e/0x20 ? trace_get_user+0x398/0x470 ? strcmp+0x35/0x60 ftrace_trace_onoff_callback+0x48/0x70 ftrace_regex_write.isra.43.part.44+0x251/0x320 ? match_records+0x420/0x420 ftrace_filter_write+0x2b/0x30 __vfs_write+0xd7/0x330 ? do_loop_readv_writev+0x120/0x120 ? locks_remove_posix+0x90/0x2f0 ? do_lock_file_wait+0x160/0x160 ? __lock_is_held+0x93/0x100 ? rcu_read_lock_sched_held+0x5c/0xb0 ? preempt_count_sub+0x18/0xd0 ? __sb_start_write+0x10a/0x230 ? vfs_write+0x222/0x240 vfs_write+0xef/0x240 SyS_write+0xab/0x130 ? SyS_read+0x130/0x130 ? trace_hardirqs_on_caller+0x182/0x280 ? trace_hardirqs_on_thunk+0x1a/0x1c entry_SYSCALL_64_fastpath+0x18/0xad RIP: 0033:0x7fe61c157c30 RSP: 002b:00007ffe87890258 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: ffffffff8114a410 RCX: 00007fe61c157c30 RDX: 0000000000000010 RSI: 000055814798f5e0 RDI: 0000000000000001 RBP: ffff8800c9027f98 R08: 00007fe61c422740 R09: 00007fe61ca53700 R10: 0000000000000073 R11: 0000000000000246 R12: 0000558147a36400 R13: 00007ffe8788f160 R14: 0000000000000024 R15: 00007ffe8788f15c ? trace_hardirqs_off_caller+0xc0/0x110 ---[ end trace 99fa09b3d9869c2c ]--- Bad trampoline accounting at: ffffffff81cc3b00 (do_IRQ+0x0/0x150) Cc: stable@vger.kernel.org Fixes: 59df055f ("ftrace: trace different functions with a different tracer") Signed-off-by:
Steven Rostedt (VMware) <rostedt@goodmis.org>
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Ming Lei authored
Commit 729204ef("block: relax check on sg gap") allows us to merge bios, if both are physically contiguous. This change can merge a huge number of small bios, through mkfs for example, mkfs.ntfs running time can be decreased to ~1/10. But if one rq starts with a non-aligned buffer (the 1st bvec's bv_offset is non-zero) and if we allow the merge, it is quite difficult to respect sg gap limit, especially the max segment size, or we risk having an unaligned virtual boundary. This patch tries to avoid the issue by disallowing a merge, if the req starts with an unaligned buffer. Also add comments to explain why the merged segment can't end in unaligned virt boundary. Fixes: 729204ef ("block: relax check on sg gap") Tested-by:
Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by:
Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by:
Ming Lei <ming.lei@redhat.com> Rewrote parts of the commit message and comments. Signed-off-by:
Jens Axboe <axboe@fb.com>
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git://github.com/bzolnier/linuxLinus Torvalds authored
Pull fbdev fixes from Bartlomiej Zolnierkiewicz: - fix probing time checks in omapfb driver (regression fix) - fix optional VBAT support in ssd1307fb driver (regression fix) - fix connecting to backend in xen-fbfront driver * tag 'fbdev-v4.11-rc6' of git://github.com/bzolnier/linux: fbdev: omapfb: delete check_required_callbacks() xen, fbfront: fix connecting to backend fbdev/ssd1307fb: fix optional VBAT support
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull power management fixes from Rafael Wysocki: "These fix a cpufreq core regression related to CPU online/offline and several issues in the turbostat and cpupower utilities. Specifics: - Allow CPUs to be put back online even if the cpufreq driver is unable to work with them (eg. due to missing information from platform firmware), which was the previous behavior expected by users, but changed in the 4.9 time frame (Chen Yu). - Fix a few minor issues in the turbostat utility, introduced mostly during the recent update of it (Len Brown, Doug Smythies). - Fix a cpupower utility bug causing it to report incorrect values for turbo frequencies in some cases (Ben Hutchings)" * tag 'pm-4.11-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: cpupower: Fix turbo frequency reporting for pre-Sandy Bridge cores cpufreq: Bring CPUs up even if cpufreq_online() failed tools/power turbostat: update version number tools/power turbostat: fix impossibly large CPU%c1 value tools/power turbostat: turbostat.8 add missing column definitions tools/power turbostat: update HWP dump to decimal from hex tools/power turbostat: enable package THERM_INTERRUPT dump tools/power turbostat: show missing Core and GFX power on SKL and KBL tools/power turbostat: bugfix: GFXMHz column not changing
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull ACPI fixes from Rafael Wysocki: "These revert a recent ACPICA commit that turned out to be problematic and fix a device enumeration breakage from the 4.8 cycle. Specifics: - Revert a recent ACPICA commit targeted at catching firmware bugs which promptly did that and caused functional problems to appear (Rafael Wysocki). - Fix a device enumeration problem introduced in the 4.8 time frame which caused the ACPI docking station driver to report incorrect status via sysfs among other things (Rafael Wysocki)" * tag 'acpi-4.11-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: Revert "ACPICA: Resources: Not a valid resource if buffer length too long" ACPI / scan: Set the visited flag for all enumerated devices
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linuxLinus Torvalds authored
Pull CONFIG_STRICT_DEVMEM fix from Kees Cook: "Fixes /dev/mem to read back zeros for System RAM areas in the 1MB exception area on x86 to avoid exposing RAM or tripping hardened usercopy" * tag 'devmem-v4.11-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: mm: Tighten x86 /dev/mem with zeroing reads
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git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhostLinus Torvalds authored
Pull virtio fixes from Michael S. Tsirkin: "virtio oops fixes The virtio pci rework using shared interrupts caused a lot of issues. We tried to fix them but run out of time. Revert for now, and revisit the issue for the next kernel. Luckily we are able to do this without loosing automatic interrupt NUMA affinity which was the main motivator for the rework" * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: virtio-pci: Remove affinity hint before freeing the interrupt Revert "virtio_pci: remove struct virtio_pci_vq_info" Revert "virtio_pci: use shared interrupts for virtqueues" Revert "virtio_pci: don't duplicate the msix_enable flag in struct pci_dev" Revert "virtio_pci: simplify MSI-X setup" Revert "virtio_pci: fix out of bound access for msix_names" MAINTAINERS: fix virtio file pattern virtio_console: fix uninitialized variable use virtio_net: clear MTU when out of range virtio: allow drivers to validate features virtio_net: enable big packets for large MTU values
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git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nfDavid S. Miller authored
Pablo Neira Ayuso says: ==================== Netfilter fixes for net The following patchset contains Netfilter fixes for your net tree, they are: 1) Missing TCP header sanity check in TCPMSS target, from Eric Dumazet. 2) Incorrect event message type for related conntracks created via ctnetlink, from Liping Zhang. 3) Fix incorrect rcu locking when handling helpers from ctnetlink, from Gao feng. 4) Fix missing rcu locking when updating helper, from Liping Zhang. 5) Fix missing read_lock_bh when iterating over list of device addresses from TPROXY and redirect, also from Liping. 6) Fix crash when trying to dump expectations from conntrack with no helper via ctnetlink, from Liping. 7) Missing RCU protection to expecation list update given ctnetlink iterates over the list under rcu read lock side, from Liping too. 8) Don't dump autogenerated seed in nft_hash to userspace, this is very confusing to the user, again from Liping. 9) Fix wrong conntrack netns module refcount in ipt_CLUSTERIP, from Gao feng. ==================== Signed-off-by:
David S. Miller <davem@davemloft.net>
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Aaro Koskinen authored
Commit 561eb9d0 ("fbdev: omap/lcd: Make callbacks optional") made panel callbacks optional but forgot to update check_required_callbacks(). As a result many (all?) OMAP systems using omapfb will crash at boot. Fix by deleting the whole function. Fixes: 561eb9d0 ("fbdev: omap/lcd: Make callbacks optional") Signed-off-by:
Aaro Koskinen <aaro.koskinen@iki.fi> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by:
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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Rafael J. Wysocki authored
* acpi-scan-fixes: ACPI / scan: Set the visited flag for all enumerated devices * acpica-fixes: Revert "ACPICA: Resources: Not a valid resource if buffer length too long"
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Rafael J. Wysocki authored
* pm-cpufreq-fixes: cpufreq: Bring CPUs up even if cpufreq_online() failed * pm-tools-fixes: cpupower: Fix turbo frequency reporting for pre-Sandy Bridge cores tools/power turbostat: update version number tools/power turbostat: fix impossibly large CPU%c1 value tools/power turbostat: turbostat.8 add missing column definitions tools/power turbostat: update HWP dump to decimal from hex tools/power turbostat: enable package THERM_INTERRUPT dump tools/power turbostat: show missing Core and GFX power on SKL and KBL tools/power turbostat: bugfix: GFXMHz column not changing
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Greg Kroah-Hartman authored
This reverts commit 5362544b as it is reported to cause a reproducable crash. Fixes: 5362544b ("tty: don't panic on OOM in tty_set_ldisc()") Reported-by:
Vegard Nossum <vegard.nossum@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: <syzkaller@googlegroups.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jslaby@suse.com> Cc: Peter Hurley <peter@hurleysoftware.com> Cc: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
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Tyler Baker authored
The raw_spinlock in the IMX GPCV2 interupt chip is not initialized before usage. That results in a lockdep splat: INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. Add the missing raw_spin_lock_init() to the setup code. Fixes: e324c4dc ("irqchip/imx-gpcv2: IMX GPCv2 driver for wakeup sources") Signed-off-by:
Tyler Baker <tyler.baker@linaro.org> Reviewed-by:
Fabio Estevam <fabio.estevam@nxp.com> Cc: jason@lakedaemon.net Cc: marc.zyngier@arm.com Cc: shawnguo@kernel.org Cc: andrew.smirnov@gmail.com Cc: linux-arm-kernel@lists.infradead.org Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/20170413222731.5917-1-tyler.baker@linaro.orgSigned-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Peter Zijlstra authored
When the perf_branch_entry::{in_tx,abort,cycles} fields were added, intel_pmu_lbr_read_32() wasn't updated to initialize them. Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Cc: <stable@vger.kernel.org> Fixes: 135c5612 ("perf/x86/intel: Support Haswell/v4 LBR format") Signed-off-by:
Ingo Molnar <mingo@kernel.org>
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Linus Torvalds authored
Merge fixes from Andrew Morton: "11 fixes. The presence of 'thp: reduce indentation level in change_huge_pmd()' is unfortunate. But the patchset had been decently reviewed and tested before we decided it was needed in -stable and I felt it best not to churn things at the last minute" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: mailmap: add Martin Kepplinger's email zsmalloc: expand class bit zram: do not use copy_page with non-page aligned address zram: fix operator precedence to get offset hugetlbfs: fix offset overflow in hugetlbfs mmap thp: fix MADV_DONTNEED vs clear soft dirty race thp: fix MADV_DONTNEED vs. MADV_FREE race mm: drop unused pmdp_huge_get_and_clear_notify() thp: fix MADV_DONTNEED vs. numa balancing race thp: reduce indentation level in change_huge_pmd() z3fold: fix page locking in z3fold_alloc()
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Martin Kepplinger authored
Set the partly deprecated companies' email addresses as alias for the personal one. Link: http://lkml.kernel.org/r/1491984622-17321-1-git-send-email-martin.kepplinger@ginzinger.comSigned-off-by:
Martin Kepplinger <martin.kepplinger@ginzinger.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Minchan Kim authored
Now 64K page system, zsamlloc has 257 classes so 8 class bit is not enough. With that, it corrupts the system when zsmalloc stores 65536byte data(ie, index number 256) so that this patch increases class bit for simple fix for stable backport. We should clean up this mess soon. index size 0 32 1 288 .. .. 204 52256 256 65536 Fixes: 3783689a ("zsmalloc: introduce zspage structure") Link: http://lkml.kernel.org/r/1492042622-12074-3-git-send-email-minchan@kernel.orgSigned-off-by:
Minchan Kim <minchan@kernel.org> Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Cc: <stable@vger.kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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